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Raptor 6.2l Turbo build

Old 09-14-2010, 07:19 PM
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Default Raptor 6.2l Turbo build

Hey guys whats up? I'm new on the forums so I figured I would post up what I plan and why.

I have a 2010 Raptor with a 6.2l that I want to do a turbo on. It has a Y pipe that merges into a 3" in the PERFECT spot to fit a turbo on it. I have room to remote mount it and run the piping.

I'm not experienced in turbos as I am mostly a supercharger or n/a kinda guy. So first I guess I should start with the goals and reasons:

1. I wanted to be able to point to it and say "Yeah, I built that myself" and not say its any particular kit

2. I wanted to try something new and decided a mid mount turbo would be a cool start.

3. I want to have a 550rwhp Raptor... its just plain bad *** to have an all year round vehicle that can run 12's on top of it!

4. I want to improve my mechanical skills.

5. Goals: 550rwhp on 93 octane and 12's

6. Hennessey has a kit out, they wanted around $24,000 for it... yeah I can do it cheaper, another kit was offered at $7000, again I know I can do it a lot cheaper, I'm thinking I could do it for around $3500-4000 tuned as I already have injectors, and will only need a boost a pump.

So here's where I am at, I want to build my own kit. Some questions:

What size turbo for 7-12psi on a 6.2l?
Do I need an intercooler for a mid mount turbo?
Can I get away with silicone couplers instead of welding the charge pipe?
If not, where should I use the couplers and what should I avoid with them?
I have a guy who i can have weld the bung's in if I need, flange work ect ect. but what parts are a good quality?

I will be taking lots of pictures, and can take a lot of pictures of where I have room, options for routing piping, ect ect, and would love to share my experience in this build thread!
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Old 09-15-2010, 09:30 AM
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6.2 liter engine i would go with a t70(with a t4 inlet flange). a t70 will spool quickly(~1500-2000rpm).if thats too low go with a larger exhaust housing. should be one hell of a ride. if you do everything yourself including welding you can build it for less than 2000.00. professional welders charge anywhere from 50-75.00 an hour and it will ad up quickly. you can use hose clamps but the more you use the more risk of hose blow off and less reliability of your turbo system. i have 6 couplers on my system. two at the intercooler, two midway up the boost pipe to allow for easy removal/installation, one at the turbo boost outlet and the last one at the throttle body. if you have room i would mount the turbo as close the the engine as opssible. i mid mount system will require a scavenge pump and there not cheap. an intercooler is always recommended over 6 psi. you can get away with out one on a rear mount low boost setup but i wouldnt go without one on anything over 6 psi.

i dont know much about ford's as i am a gm guy but i wouldnt boost it more than 8-10 psi on a stock motor as the motor is most likely already built to its limit and with higher compression making over 400hp it may be devistating.
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Old 09-15-2010, 09:54 AM
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Originally Posted by busa4 View Post
6.2 liter engine i would go with a t70(with a t4 inlet flange). a t70 will spool quickly(~1500-2000rpm).if thats too low go with a larger exhaust housing. should be one hell of a ride. if you do everything yourself including welding you can build it for less than 2000.00. professional welders charge anywhere from 50-75.00 an hour and it will ad up quickly. you can use hose clamps but the more you use the more risk of hose blow off and less reliability of your turbo system. i have 6 couplers on my system. two at the intercooler, two midway up the boost pipe to allow for easy removal/installation, one at the turbo boost outlet and the last one at the throttle body. if you have room i would mount the turbo as close the the engine as opssible. i mid mount system will require a scavenge pump and there not cheap. an intercooler is always recommended over 6 psi. you can get away with out one on a rear mount low boost setup but i wouldnt go without one on anything over 6 psi.

i dont know much about ford's as i am a gm guy but i wouldnt boost it more than 8-10 psi on a stock motor as the motor is most likely already built to its limit and with higher compression making over 400hp it may be devistating.
From what I've seen the rule of thumb is around 600rwhp max so I'm aiming lower and trying to be conservative with it. Since I am running mid mount I'm still not sure on the intercooler or not.
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Old 09-15-2010, 10:14 PM
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I'd run an in line air to water intercooler. piping from the mid mount all th way to the front bumper, thenback up to the engine is going to get laggy.
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Old 09-28-2010, 09:33 AM
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This will be sweet!
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Old 11-19-2010, 07:48 PM
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When you say a "mid-mount", are you referring to the turbo being placed in the middle of the vehicle? If so, usually the exhaust leaving the engine gets routed to a downward, almost always under the cab. The problem with a low mounted turbo is the oil supply. Bringing oil to the turbo is no problem as it leaves the pump pressurized, once it travels through the turbo, it looses it's pressurization and is normally gravity fed back to the motor. I am not an expert, nor will I play one here, I just know that when Porsche turbocharges their cars, they use a scavenging/suction pump to suck oil back into the the oil pan to be used again. Also, not that it's a big deal, but the farther you place the turbo away from the motor, the longer your piping needs to be which reduces the velocity of the air flowing through them.

My vote... Take out the factory airbox and junk and make a "Y-pipe" or merge pipe, where the two banks come together, route it to the turbo where the factory airbox would be.Now, it depends what your after, put in a (insert brand) small turbo for a very quick spool and less peak power, or a large (insert brand) turbo for a slower spool, but a high peak horsepower. Usually when you want low end grunt, you supercharge, but I'm in for a Single 6.2 SOHC build. For what it's worth, I've got a 4.0 1UZ Lexus V8 with a medium T3 turbo, and I start to make boost by 2,000 RPMs, and peak (@ 7psi) at 3,500 due to factory electronics and fuel.
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Old 07-08-2011, 12:50 AM
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Your best bet is to make a crossover pipe, use stock manifolds route the exhaust bak forward and mount a turbo in the front somewhere. 550whp is a gross underestimate of what that thing will make on a very very simple turbo kit. Id say with a simple crossoverpipe and an ebay intercooler setup using somehting like a 76mm or maybe an hx40 you should be around 600hp on very low boost. I have built a few turbo kits for 4.6l 2v mustangs and even those respond very well, ussually they have to be turned down to very low boost to keep stock motors alive at like 450whp. The 6.3 is going to make much more power much easier and i would venture to say that you wont be able to keep it below 600hp with any decent turbo setup on more then 8psi. Dont try to puta small turbo on it, that engine moves alot of air and will chock easily on anything t3. I would put a 76mm on it for sure.
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Old 03-05-2019, 09:48 PM
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Default I've got a 2012 Raptor and am thinking the same

I can get a cheap turbo and a good rebuild kit. I don't make much money and am thinking about doing it for fuel economy instead of performance.
I haven't started anything yet, but was thinking of running a lot of pipe back to an intercooler, remote oil pump and sump tank, keeping the boost low and just using the 5 star engine programmer.
You know the saying "just enough knowledge to get you into serious trouble" ?
I've also heard that rear mounted turbos dont lag and they are safer on stock engines because the boost doesn't hammer the internals, smoother or something
MikeE is offline  
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